During the launch, it erupted like a volcano and poured onto the target like a volcano; the sound was like thunder and tiger roaring, and the heat was like a rushing wave of mountains and seas. It not only eliminated the Japanese's large amount of living forces and military equipment, but also gave the Japanese a huge spiritual shock.

Yang Tianfeng held up the telescope and did not let it go for a long time. He imagined the power of the rocket launcher when it was put into actual combat and the tragic situation of the Japanese.

Ou Hantao scratched the hair of the messy tent and was also very excited. The successful manufacturing of every new weapon was the hard work of him, technicians and workers, and every victory on the front line also had their contributions and contributions.

"Made, hoard, and special ammunition trucks are also required. In the short term, our army may not use rocket launchers for actual combat." Yang Tianfeng put down his telescope and said something that made Ou Hantao a little disappointed.

But Ou Hantao became relieved. Although the arsenal has been expanding, from machines to personnel, from completely purchased equipment to partially self-made, it has developed very quickly. However, compared with Japan, an industrialized country, it is still a thousand miles away. Some weapons can be used, and some weapons can be imitated, the consequences will be very serious.

Therefore, only when rocket launchers and rockets are stored to a certain order of magnitude can Yang Tianfeng be used in actual combat. Or the situation is very critical, so naturally he will not care about the consequences.

"The recoilless cannon should be used, right?" Ou Hantao said tentatively: "The Japanese devils have many direct-fired cannons and heavy cannons. They should not be too far away and have to work hard to create such weapons, right?"

"Actually, it can be used, but you have to master the opportunity." Yang Tianfeng smiled and patted Ou Hantao's arm. "Whether Germany has recoil cannons, the United States will have them, but in terms of performance and quality, ours is the most mature and best."

During World War II, the purpose of Germany's recoilless gun was to provide airborne troops with a heavy support firepower that could be obtained quickly, so it mainly equips paratroopers. Germany's recoilless gun has advanced technology, long range, high accuracy, easy to disassemble, and flexible maneuvering. It is the best weapon for paratroopers who lack heavy firepower and mountain infantry with difficulty in maneuvering.

For Yang Tianfeng, who is accustomed to using the use of the art, the drawings he took out were the advantages of the German 75mm LG40 model and the American m20 model 75mm recoilless gun. The final gun weighed 53 kilograms, a diameter of 75mm, a direct range of bipods of 500 meters, a direct range of tripods, and a maximum range of more than 6,000 meters.

That's right, a recoilless cannon can fire directly or bending, can fire armor-breaking bombs to attack armored targets, and can also fire high-explosive grenades to kill enemy vitality. Therefore, it can be used as a battalion-level support cannon and is very powerful.

It can also be seen from various indicators that the recoil-free cannon is much higher than the steel fist in its range and is also powerful. It is no problem to deal with the Japanese artillery towers and bunkers, and it is safer. Moreover, with the improvement of steel technology, the weight of the cannon may further decrease.

What Yang Tianfeng was even happier was not the success of the manufacturing of new weapons, but the breakthroughs and progress in the arsenal technology. From imitating Browning 12.7mm heavy machine guns, to the Soviet Union's 37mm anti-aircraft guns, to the manufacturing of 75mm recoilless guns, with the help of newly installed machinery and equipment, and thanks to the advancement of processing technology, the production of rifled guns and artillery finally took a milestone major step.

Ou Hantao did not understand what Yang Tianfeng said, nor did he want to understand. Anyway, it would be used to fight the Japanese sooner or later, which would be enough. At the same time, every time Yang Tianfeng took out a piece of drawing materials, it was a challenge for him and the technicians, and it was also a accumulation and improvement of knowledge and technology. He was happy with it.

In addition to the demonstration of rocket launchers and recoilless cannons, Yang Tianfeng also saw the experimental effect of the air bomb shells.

Although there are still great difficulties in producing radio-type air bomb shells, it does not hinder the creation of a simple counter-dumping device against infantry. Install a spring-like counter-throwing device in the front of the shell and connect it to the delay fuse of the shell. After the shell lands, it triggers the lead and jumps back into the air to explode, greatly increasing the killing radius and effect.

If newly developed mixed explosives and prefabricated steel balls are loaded into the warhead of the shell, the explosion power of the 82 mortar can be close to or exceed the ordinary 120 mortar, and the power of the 120 mortar is nearly twice as high.

On the one hand, it is to develop and launch new weapons, and on the other hand, it is to dig deep into the potential of existing weapons and ammunition. Yang Tianfeng can be said to have brought the knowledge and technology in his mind to the extreme.

At the same time, his data output and the technical exchange promoted have greatly promoted the improvement of the technology of the rear production process.

For example, the 28th Plant of the Arsenal Department not only made tungsten die steel, but also made continuous breakthroughs in special alloy steel, machine gun barrel steel, non-retractable steel, stainless steel, spring steel, and special alloy castings. The 24th Plant of the Arsenal Department has also successfully developed chromium barrel steel, which has been widely used in the manufacturing of medium-term rifles.

These achievements of metallurgical industry were originally expected to appear in history, but with the help and promotion of Yang Tianfeng, they greatly advanced the agenda and supported the War of Resistance on the frontline more effectively.

Yang Tianfeng, or the arsenal, has also gained great benefits from these technological advances and saved a lot of time in research and experiments.

In other words, this is a mutual promotion and promotion. For example, the 12.7mm heavy machine gun adopts new technology of chrome barrels, making shooting more reliable and more wear-resistant.

"The technical research team has a task again." Yang Tianfeng smiled bitterly apologetically, "I always keep working for you and compressing your rest time. But this is also impossible, anti-Japanese..."

"Commander, don't be so polite." Ou Hantao not only showed any discomfort, but also felt excited. "We hide behind, eat and drink without worries, and are treated higher than those soldiers fighting on the front line. This is already uneasy. If we are freer, it will be unreasonable."

"Okay, then we won't be polite." Yang Tianfeng took out a stack of paper from his briefcase, which were covered with graphics and various marks.

"The commander works harder than us." Ou Hantao sincerely admires, "You are commanding wars, engaging in troops, and guiding various production. Even in your spare time, you have to write and paint at your desk. This, this-"
Chapter completed!